We bought this about a month ago and installed it.  The installation for my windows was not what I was thinking but it worked and everything looked good.  We got this as an additional cooling unit to my central unit.  My wife has a medical condition and heat is a trigger so it is imperative to have at least one room frigid.  I wanted the room temp to be at least 60 degrees.  The unit cycles the compressor on and off but the room temp is NOT 60.